I don't like the idea of using meth, and was pondering the idea of water injection only, mainly for det and knock supression. It seems that jetting in front of the throttle body doesn't give good disppersion to all cylinders, so would plumbing a single jet in front of the IC inlet be a bad idea? Hopefully guys with experience can share some insight. Thanks.

 

spraying before the IC is not the best idea. There has been some testing that shows it decreases the efficiency of the IC and in extreme cases if you spray too much water it will actually condense in the IC and increase temps.

If you want to get the best atomization put a nozzle in the outlet of the IC or the very very beginning of the UICP.

 

"It seems that jetting in front of the throttle body doesn't give good dispersion to all cylinders"

Remember no matter where the jet is located in the intake tract, intake tracts have not been designed for wet flow, so its a compromise.

To be technically true port injection near the combustion chamber is the spot..........but once you get around to mulling this over you realize unlike fuel or air W/A will not be on 100% of the time, near the TB is not so bad.

Before the IC has a purpose but for 95% of everyone doing W/A injection its:

1) at or near the IC exit tank to better effect air intake charge temperature

2) closer to the combustion chamber to better effect knock suppression.

A caveat about these locations is that there both part of the same issue and are totally related to each other.

IMO (if go with an Aquamist kit) get a couple of extra jet adapters and mount a couple of these in strategic locations in your air inlet tract and then try and see what locations give you the best results. On my car I used one jet near the TB and another jet located in the end of the IC exit tank.......they supported each other and I liked the results of both jets more then either one on its own.

The jet adapters are unobtrusive and come with plugs when a jet is not installed.

 

Install it just after the IC for best results!

 

no, i just bought a kit from alcoholinjectionsystem.com
they got great technical support, they told me spraying before separates the the water and meth and they wont bond back,
spray right befor the throttle body, have it activate between 11-14psi.

 

Is that www.alcohol-injection.com?

 

water and methanol is miscible - they separate by distillation.

depending on the nozzle/spray type, keep it several inches away from TB to give chance for homogenization and better runner/cylinder distribution